Socket wrench



Aprile, 1926. 1 1,579,593

Y 1 J. BowMAN v SOCKT WRENGH Fi1ed March 13. 1924 2 sheets-sheet 1 L. gnou/nio@ April 6 1926.

l.. J. BowMAN `SOCKET WRENCH Filed -Mach 13, 1924 2 Sheets-Sheet 2 attenta,

Patented Apr. f6, 1.926.

fUMTED s 'ifa'i-"rss4 LESTER J'. BQWMAN, jOF BAY CITY, OREGON.

SOCKET WRENCH. i

To all whom 'it may concern: l

Be it' knownthat I,"'LEs'rER J.- Bow'MAN, a citizen'of the United States, residing at Bay City, in the county of Tillamook and State of Oregon, have invented a new and useful Socket Wrench, of which the following is a specification. v y This invention relates to socket' wrenches and more particularly to socket Wrenches of the power-driven type.

The primary object of the invention is to provide means for permitting the clutch mechanism of the device to slip when the nut under operation has been properly positioned, thereby insuring against the twisting ofi' of thebolt on whichvthe nut is being positioned. i A

Another object of the invention 1s to pro- I vide a power i wrench with a telescoping shank," whereby .the tool lmay be adapted for various usages. f

With the foregoing and other objects in view which will appear as the description proceeds,- the invention resides in vthe combination andarrangement of parts and inthe'details of construction hereinafter de scribed and claimed, it being understood that changes inthe precise embodiment of the invention herein disclosed,'may be .made Within the scope of "what is claimed,with out departing from the spirit of the in ven-V tion.

Referring 'to the drawings:

Figure lis an elevational view of a car wrench constructed in accordance with the invention;

Fig. 2 is a sectional view taken on line 2 2 of Fig. 1,- thel vbody portion ofthe wrench being removed;

Fig. 3 is a.,sectional view througl1 the shank of the wrench;

Fig. 4 is a longitudinal sectional view through the shank, one of the sections ofthe body of the wrench being removed;

Fig. is a sectional detail viewdisclosing the controllingl means. and a portion of the shank; and

Fig. 6 is a sectional detail view disclosing the means for holding the sections of the shank in their extended positions.

Referring to the drawings in detail, the body portion of thewrench includes op-4 posed sections 5 and 6, each of which sections being provided with apertured ears 7 Application l'ed March 13, 1924. Serial No. 698,969. y

to' accommodate the securing bolts 8 whereby the sections of the body may be secured together.

A tubular extension 9 forms a part of the body portion and provides a bearing for the shank section l0 of-the wrench, in which the shank section 11 moves, the shank section 11 havingconnection with the socket section 12, as .clearly shown by Fig.`"4 of' the drawings. The Asection 10 is formed preferably with a squarebore to accommodate the squared head 13 formed on one end of the shank section 11 sor that rotation of the shank section 10 will result in a relative rotary movement of the sections 11 and 12 to accomplish the purpose of the invention. A

Coiled spring 14 has one of its ends anchored to the partitioning wall 15 formed at one end ofthe section 10 of the shank, whilevthe opposite end of the coiled spring is connected .with the eye 16 of the shank section 1I, sothat when the shank section 11 is eX- tive position, when the locking means which tended, the spring 1'4 willV be placed under 4 tension to return the section 11 to its inac-. o

is in the form of a set-screw 17 is moved to its inactive position. As shown, this setscrew 17 contacts with the section l1 to hold the section 11 extended.

Disposed within the bodyportion l5 is an electric motor 18 which operates the pinion 19 that 1n turn transmits motion to the pinion 20 through the pinion 21 and shaft 22. X Bearing 2.3 is disposed within'the body portion 5 Aand supports the shaft 24 which is provided with a pinion 25 meshing with the plmon 20 to receive motion therefrom.

' A friction clutch member .is indicated at 26 and is secured to the outer end of the shaft 24, the clutch member 26 cooperating withlthe movable clutch member 27 toconnect the shafts 24 and 28and cause the operation of the socket supportingshank.

' -The .shaft 28 is secured to the inner ex tremity of the socketed shank section 10 at 29, whereby rotary movement of the shaft spring '22" being provided andv connected with the arm' 31 so that the coiled spring will tend to normally hold the clutch members disengaged.

The controlling mechanism forming an important feature of the invention embodies a sleeve 33 lwhich collar is positioned over the tubular section 9 of the'body portion` in a manner to permit the same to slide longitudinally of the extension. Formed inte-V gral with the sleeve 33 is a threaded member 34 that is formed with a slotted portion to permitthe sleeve to move over the stop 35, the stop being formed with a plurality of shoulders 36 arranged at various levels and rigidly attached to or formed integral with the extension 9. v

As shown, the threaded member 34 accommodates the adjustable stop 36 which is designed to be rotated over the lmember 34 to partially close the slotted portion of the member 34 and contactl,l with one of the shoulders when the sleeve has been moved lto a predetermined position.

` A hook member indicated'at 37 is formed on the member 34 and receives one end of the coiled'spring 38, the opposite end of the coiled spring being connected with the arm 31; and since the arm 3l is pivotally supported intermediateits ends as at 39, it will be obvious that as'the sleeve 33 is moved along the extension 9, the arm will be operated to throwthe clutch member 27 into engagement with the clutch memberV 26 to cause the operation of the device.

' v AThus it will be seen that if it is desired to Y position a half-inchjnut on a bolt. it is obvious that the power required to position coiled spring 38 to the end that the clutch members would slip and prevent the further rotation of the nut under operation.

If it is desired to position a one-inch nut, it is obvious that by rotating the member 36 on the member 34, to cause the lower end of the member 36 to clear the first notch of the stop 35l when the sleeve is moved along the tubular section 9 the spring 38 will be placed under greater tension 4to cause the clutch members to be held into engagement a greater length of time. i

What is claimed as new is 1. In a device of the character..described` a body portion, a tubular shank supported by the body portion', a wrench shank slidably mounted within lthe tubular shank and carrying a .wrench socket at its outerend, a

coiled spring positioned in the tubular shank, one. end of the coiled spring -beingv secured Within the tubular member, the opposite end of the spring being secured to the slidable shank'to normally draw the slidable socket carrying shank inwardly, and means for holding the slidableshank tions of adjustment. f

2. In a Vdevice of the character described, a body portion, a tubular shank supported in various posiby the body portion, a stop `mounted on the f body portlon and having a "plurality of shoulders, a sleeve operating over thetubular shank, a threaded member formingk a part of the ,sleeve and having a slotted portion to permit the threaded 'member tobe moved over the stop,'and an adjustable member on the threaded member and adapted .to -be adjusted longitudinally-thereof, said ad justable member adapted 'to move into engagement withthe shoulders to restrict movement of the sleeve, and a, clutch device controlled by the movement of the sleeve'.

In testimony that Il claim the foregoing as I my own, I have hereto oiixed my signature.

J. BowMAN. 

